Electric indicator.



No. 632,970. 'Patented sept. l2, |899. F. B. POPE.

ELECTRIC INDICATOR.

Application fled May' 15. 1899. (No Model.) 3 Sheetsf-Sheet TH: Norms PETERS no., movauruo., wAsmNs-mN, u4 c.

Patented Sept l2, |899. F. B.

ELECTRIC (.Applicntion l POPE.

INDICATOR.

ed may 15, 18994) 3 Sheets-Sheet 2` (No Modei.)

3 Sheets-Sheet 3,

(No Model.)

/IV VE N TO'? Manoir B. Pope. B I a A 77'0/9NE Y z cams mans oo.. Puma-uws., wnsmnsrou n c Nrrnn STATES PATEN FREDERICK B. POPE, OF AUGUSTA, GEORGIA.

ELECTRIC INDICATOR.

SPECIFICATION forming part of Letters Patent NO. 632,970, dated September 12, 1899.

Application filed May 15, I 89 9.

To @ZZ 'whom it may concern.:

Be it known that I, FREDERICK B. POPE, of Augusta, in the conn ty of Richmond and State of Georgia, have invented a certain new and useful Improvement in Electric Indicators, of which the following is a specification.

My invention relates to electric indicators wherein a number of separate electric circuits are employed in connection with a series of independent magnets. The magnets are arranged in the form of a circular cluster with their poles pointing toward the center thereof. A suitable iron or steel needle, which may be magnetized or not, as desired, is carried on a shaft Within the center of the cluster of magnets. A suitable dial or index is arranged adjacent to the magnets, and when so desired a second corresponding index is arranged on the other side of the cluster of magnets, so as to be visible from the rear. An additional needle is mechanically connected to the rst needle (by being mounted upon the same shaft) and is arranged adjacent to the second index. A bell or buzzer may be arranged adjacent to the magnets and may be conveniently operated by a common return from all the magnets. By separately exciting the magnets the iron or steel needle will be attracted thereto and the second needle will be correspondingly moved, thus pointing tothe same part of both indices.

The invention also relates to the particular design and form of the magnets and to the adjusting devices for the mountings of the needles.

In order to better understand the nature of the invention, attention is directed to the accompanying drawings, in which- Figure l is a front view of the device with the glass and index removed. Fig. 2 is a sectional view thereof, taken on the line 2 2 of Fig. l; and Fig. 3 is an enlarged section al view of one of the supporting-screws. Fig. 4 is a diagrammatical View of a portion of the electric circuits.

In all the several views like parts are indicated by the same letters of reference.

The frame a is made of wood or any other suitable material. It is of the general cylindrical shape shown, with the foot or base portion b formed integrally thereon, and the large cut-away portion or recess c and the more Serial No. 716,387. (No modcl shallow recess CZ formed therein. The recesses c and Cl connect by, means of the opening e, through the center of the frame.

ff are glass windows having the indices g g thereon. The latter may be opaque, so as to hide `the magnets h.

The magnets h,of which fourteen are shown, but the number of which is immaterial, are arranged in the form of a cluster, as shown in Fig. l, the poles all nesting toward the center of the case. Each magnet consists of a coil t', the pole j, and the pole 7s. 4The pole j is wedge-shaped or pointed, as shown very clearly in Fig. l. This is for the purpose of4 allowing it to be brought very close to the center of the cluster. The pole 7c is also slightly tapered at l for the same purpose. As shown, the poles terminate very close to the center of the cluster, bringing the magnetic field also very close thereto. Suitable means are provided for separately exciting the magnets. As the specic electric connections form no part of this invention, they are not illustrated. I prefer, however, to connect the return from all the magnets through the electric bell or buzzer m, so that the same.

may be operated when any magnetis excited.

Mounted within the opening e is a horizontal shaft n, carrying at the extremities thereof the indicators or needles o and p. These Y needles are rigidly keyed at the shaft adjacent to the ends thereof and turn therewith. A suitable counterweight q is attached to the tail of either or both of the arrows, so that they will be normally perpendicular. An armature 1 is attached to the needle 0 adjacent to the magnet-ic field. When this armature is used, the needle o may be of brass or some non-magnetic material. If desired, the armature r may be discarded. The head of the needle o maybe made of iron or steel, magnetized or not, as desired, with the tail portion of brass. In order to support the shaft n and allow it to turn freely, the extremities thereof are ground to needle-points, which engage within the sockets t, formed upon the inner extremities of the adjusting-screws u. The latter are screw-threaded and engage within the threaded sleeves fu. The latter are provided with enlarged heads zu and the adj Listing-nuts a, by means of which they are securely fastened within the glass windows IOO .5 A eaasv f f. Each of the screws u is provided with an adjusting-head y and a lock-nut c. By means of this adjusting device any wear may be taken up and the shaft n may be shifted laterally to some extent, which will accurately adjust the armature o in relation to the faces of the magnets.

In Fig. 4 is shown, diagrammatically arranged, the electric circuits. In this view the switches BB2B3 B4 B5 B11B7B8B9B10 B11 B12 B13 B14 are all connected with the common return C and to the corresponding Wires A' A2 A3 A4 A5 AG A7 A8 A9 A10 A11 A12 A13 A14, which latter connect With the magnets z" 'i2 3 4 i5 i6 i7 8 9 7110 11 12 @'13 @'11, and through the wire D, the bell m, and the wire F to the battery E, thus completing the circuit.

The operation of the device is as follows: Upon any magnet being excited the armature r will be drawn within the magnetic field thereof, which will cause both the arrows o and p to point to the proper designation on the indices g g. At the same time the bell m will sound. The arrows will point to the same designation and the bell Will continue to sound until the magnet is denergized, when the arrows will return to the perpendicular position owing to the action of the counterweights q q.

Referring to Fig. 4, the switch B is closed, the circuit through the wire A', the magnet 77, through the wire D, the bell M, the Wire F, the battery E, and return to C, will be completed, the bell will ring, and the magnet be energized. This will attract the needle to the magnet and point to the proper portion of the index, the arrow will stay at the proper position and the bell continue ringing until the switch B' is opened, which Will break the circuit, denergize the magnet, and stop the bell, thus allowing the needle to return to its normal position. If the switch B2 be operated, the corresponding magnet will be energized, and so will be the case if any other switch is operated. Its corresponding magnet will be energized.

Having now particularly described and ascertained the nature of my said invention, what I claim as new therein, and desire to secure by Letters Patent, is

l. In an improvement in electric indicators, the frame therefor, carrying a cluster of independent magnets with the poles thereof` adjacent to a common center, a shaft mounted within the center of said cluster, a needle carried by said shaft adjacent to the poles of said magnets, and means for laterally adjusting said needle in relation to the poles of said magnets, and means for separately exciting said magnets, substantially as set forth.

2. In an improvementin electric indicators, the frame therefor, carrying a cluster of independent magnets with the poles thereof adjacent to a common center, a shaft mounted within the center of said cluster, a needle carried by said shaft adjacent to the poles of said magnets, and means for laterally adj usting said shaft and needle in relationI to the poles of said magnets, and means for separately exciting said magnets, substantially as set forth.

3. In animprovement in electric indicators, the frame therefor, having the recessed portions c, and d, therein, a cluster of independent magnets within the recess c, a shaft mounted Within said frame, a needle adjacent to the poles of said magnets, and a second needle within the recess CZ, and removed from the poles of said magnets, substantially as set forth.

4:. In an improvement in electric indicators, the frame therefor, having the recessed portion c therein, a cluster of independent magnets within said recess, the windows f, f, a shaft mounted within said frame and secured to bearings on said windows, a needle adjacent to the poles of said magnets, and means for separately exciting said magnets, substantially as set forth. I

5. In an improvement in electric indicators, the frame therefor, having the recessed portion c therein, acluster of independent magnets Within said recess, the windows f, f, a shaft mounted within said frame and secured to bearings on said windows, a needle adjacent to the poles of said magnets, and means for laterally adjusting said needle in relation to the poles of said magnets, and means for separately exciting said magnets, substantially as set forth.

6. An improved magnet having a coil il, a wedge-shaped pole j, offset at a right angle to the coil adjacent to one extremity thereof, and a pole 7c parallelly mounted in respect to the coil, and terminating adjacent to the pole j and on the same plane therewith, substantially as set forth.

This specification signed and witnessed this 10th day of May, 1899.

FREDERICK B. POPE.

IVitnesses:

J. H. BEAWUER, GHAS. N. BIGGAR.

IOO 

